Black Ice HWL-R106 Nemesis GTS 280mm Radiator - Black 140 mm x 2 fan slim form factor two-pass radiator. 16 FPI 25 Micron Copper Fins Now optimized for sub-800 rpm ultra-stealth fans Supercruise optimizations for scalable performance with higher speed fans 15% more tubing area in the same Black Ice GTS 280 form factor